KR20190041353A - Ultrasonic humidifier and its to method - Google Patents

Abstract

The present invention relates to an ultrasonic humidifier, which protects an ultrasonic vibrator by applying current to the ultrasonic vibrator while the ultrasonic vibrator is in contact with water, and a control method for the same. According to the present invention, the ultrasonic humidifier includes: a water tank storing the water; and a humidifier main body accommodating the water tank. The ultrasonic humidifier comprises: a vibrator; a vibrator control unit supplying current to the vibrator and blocking the current in accordance with an operation control signal from a control unit; a current sensing unit sensing the current applied from the vibrator control unit to the vibrator; an input unit obtaining user input selecting one among multiple humidification rates; a storage unit corresponding to each of the multiple humidification rates and storing multiple storage values determined in accordance with an electrical property of the vibrator and the ultrasonic humidifier; and the control unit operating the vibrator by applying the operation control signal corresponding to the selected humidification rate to the vibrator control unit and performing a vibrator protecting mode controlling the blocking and supplying of the current to the vibrator by comparing a sensed value from the current sensing unit and a reference value in which an allowable range is added to the storage value corresponding to the selected humidification rate.

Description

TECHNICAL FIELD [0001] The present invention relates to an ultrasonic humidifier,

The present invention relates to an ultrasonic humidifier and a control method thereof, and more particularly, to an ultrasonic humidifier which protects an ultrasonic vibrator by applying a current to an ultrasonic vibrator in a state where the ultrasonic vibrator is in contact with water, and a control method thereof.

A humidifier is a device that atomizes water and injects it into the air in order to create a pleasant environment and a humid environment. Humidifiers are also used to relieve respiratory illnesses caused by dry air.

Generally, ultrasonic humidifiers are widely used, which include a water tank for storing water and a humidifier main body containing a water tank and including an electric circuit. The ultrasonic vibrator may be mounted at a predetermined position of the humidifier main body or the water tank, or may be mounted to the vibrator receiving portion of the vibrating portion rotatable in the water tank, as in Korean Patent No. 10-1527339. When the ultrasonic vibrator is brought into contact with water, water is atomized by the ultrasonic vibrator to form a mist, and the formed mist is injected outside the humidifier.

Since the ultrasonic vibrator of the ultrasonic humidifier has a problem that it is damaged when the electric current is supplied in the state in which there is no water, the conventional ultrasonic humidifier includes a water level sensor for detecting the water level in the water tank or a water sensor for detecting the presence of water in the water tank Thereby protecting the ultrasonic vibrator.

However, when the humidifier main body or the water tank is inclined so that water is not supplied to the ultrasonic vibrator or the ultrasonic vibrator is exposed to the air because the ultrasonic vibrator is not in contact with water, the water level sensor or the water sensor can not know the state of the ultrasonic vibrator, Current is supplied to the vibrator to damage the ultrasonic vibrator. In addition, in Korean Patent No. 10-1527339, a portion where the ultrasonic vibrator is installed while the vibrating portion rotates is immersed in water, but there is a problem in the rotation of the vibrating portion, so that the portion where the vibrator is installed is not immersed in water or the ultrasonic vibrator If the ultrasonic vibrator is supplied with electric current before being immersed in water, the ultrasonic vibrator is similarly damaged. Further, even when an excessive current is applied to the ultrasonic vibrator, the ultrasonic vibrator is damaged.

Further, even if the vibrating part in Korean Patent No. 10-1527339 rotates according to the water level, the portion where the ultrasonic vibrator is installed is structurally kept at a predetermined height or more from the bottom of the water receiving portion, so that it can not be judged whether or not the ultrasonic vibrator is in contact with water In order to protect the ultrasonic transducer, the supply of electric current to the ultrasonic transducer had to be cut off earlier than the predetermined height. Due to such early shutdown, there has been an inconvenience that the user has to replenish the water even in a state in which a considerable amount of water remains in the water receiving portion.

An object of the present invention is to provide an ultrasonic humidifier for applying an electric current to an ultrasonic vibrator in a state where the ultrasonic vibrator is in contact with water and for protecting the ultrasonic vibrator by cutting off current supply when an excessive current flows through the ultrasonic vibrator, .

The ultrasonic humidifier includes a water tank for storing water and a humidifier main body for housing the water tank. The ultrasonic humidifier includes a vibrator, a vibrator controller for supplying and blocking current to the vibrator according to an operation control signal from the controller, A current sensing unit for sensing a current applied to the vibrator from the control unit; an input unit for acquiring a user input for selecting one of the plurality of the humidification amounts; and a controller for controlling the ultrasonic humidifier and the vibrator, And a controller for controlling the vibrator to operate the vibrator by applying an operation control signal corresponding to the selected amount of humidification to the vibrator controller, A reference value obtained by adding the allowable range to the stored value corresponding to the selected amount of humidification And a control unit for performing an oscillator protection mode for controlling supply and interruption of current to the oscillator.

If the detected value is greater than the reference value, the controller may apply an operation cutoff signal to the vibrator controller to cut off the supply of current to the vibrator.

Also, the controller may operate the vibrator by sequentially applying an operation control signal corresponding to each of the plurality of humidification amounts to the vibrator controller during a reference time before performing the vibrator protection mode, And stores the sensed values or average values of the sensed values in the storage unit as storage values corresponding to the plurality of the humidification quantities.

Preferably, the ultrasonic humidifier includes a water level sensor for sensing the level of water in the water tank, and the controller performs the storage mode when the current water level is equal to or higher than the low water level from the water level sensing value of the water level sensing unit.

Preferably, the control unit determines whether the stored values are stored in the storage unit before performing the oscillator protection mode and the storage mode.

Preferably, the control unit performs the oscillator protection mode when valid storage values are stored in the storage unit, and performs the storage mode when valid storage values are not stored in the storage unit.

The control method of the ultrasonic humidifier including the water tank for storing water and the humidifier main body for accommodating the water tank includes the step of performing the vibration protection mode, and the step of performing the vibration protection mode includes at least the selected amount of humidification The method comprising the steps of: acquiring user input; applying a current corresponding to the selected amount of humidification to a vibrator to perform a humidification operation; comparing the sensed value corresponding to the current applied to the vibrator during the humidification operation, Comparing the sensed value with the reference value, and comparing the sensed value with the reference value, wherein the sensed value corresponds to the stored value determined according to the electrical characteristics of the ultrasonic humidifier and the vibrator; And controlling the current supply and blocking.

In the present invention, a current is applied to an ultrasonic vibrator in a state where the ultrasonic vibrator is in contact with water, thereby making it possible to use the water in the water tank as much as possible while protecting the ultrasonic vibrator, thereby reducing the number of water replenishments. It has the effect of protecting the ultrasonic vibrator by blocking the current supply when it flows.

In addition, the present invention confirms the electrical characteristics of each ultrasonic humidifier equipped with the ultrasonic vibrator before performing the humidifying operation of the ultrasonic humidifier, performs the humidification operation of the ultrasonic humidifier on the basis of the confirmed electrical characteristics, and protects the ultrasonic vibrator more precisely There is an effect that can be done.

1 is a control block diagram of an ultrasonic humidifier according to the present invention.
Fig. 2 is a flow chart of the first embodiment of the control method of the ultrasonic humidifier of Fig. 1;
3 is a flow chart of the first embodiment of the storage mode for storing the stored value A according to the respective amounts of the humidification of FIG.
4 is a flowchart of a second embodiment of the storage mode for storing the stored value A according to the respective amounts of the humidification of FIG.
5 is a flowchart of a second embodiment of the control method of the ultrasonic humidifier of Fig.

Hereinafter, the present invention will be described in detail with reference to embodiments and drawings.

The ultrasonic humidifier according to the present invention comprises a water tank for storing water, a humidifier main body for containing the water tank, and a lid for opening and closing the water tank of the humidifier main body, and a control structure which is mounted on the humidifier main body or the lid, .

1 is a control block diagram of an ultrasonic humidifier according to the present invention. The ultrasonic humidifier includes an input unit 1 for obtaining a humidification amount (or a spray amount) from a user, a humidification time, a storage mode start input, a storage mode end input, A vibrator control unit 5 for applying and interrupting a current to and from the vibrator 7 in accordance with an operation control signal / operation stop signal of the control unit 20, 5 for detecting ultrasonic vibration by the ultrasonic vibration of the vibrator 7, a current sensing part 9 for sensing the current supplied to the vibrator 7 by the vibrator control part 5, At least one storage value A for judging that there is no water in contact with the vibrator 7 or determining whether an overcurrent is applied to the vibrator 7 from the electrical characteristics of the ultrasonic humidifier, To save It consists of a storage unit 13, and by controlling the elements described above perform the humidifying operation, the control unit 20 to perform a transducer protection mode, the stored values for saving mode (A) or the like. However, the power supply unit (not shown), the vibrator control unit 5, the vibrator 7, the water level sensing unit 11, and the like, which supply necessary power to the above-described components, It is merely a technique widely known to people, and a detailed description thereof is omitted.

The input unit 1 stores a humidification amount (for example, strong / medium / weak), a humidification time (for example, 4 hours / 6 hours / 8 hours / A storage mode start input, a storage mode end input, a humidification operation start input, and a humidification end input, and the like are acquired and applied to the control unit 20.

The display unit 3 displays the humidification amount and the humidification time selected by the user and the water level sensed by the water level sensing unit 11 or determined by the control unit 20 (for example, high / medium / low, no water) (For example, a humidification mode, a vibrator protection mode, a storage mode, etc.), a water replenishment guide, a current interruption guide, etc., visually and / or audibly.

The current sensing unit 9 is connected to the wiring between the vibrator controller 5 and the vibrator 7 to detect a part of the current or current supplied from the vibrator controller 5 to the vibrator 7, To the control unit (20).

The storage unit 13 stores at least one storage value A for judging that no water is in contact with the vibrator 7 or an overcurrent is applied to the vibrator 7, And first to third stored values A1, A2, and A3 corresponding to a plurality of humidification amounts (strong / medium / weak), respectively. The storage unit 13 stores an initial value (for example, 0) before receiving the storage value A from the control unit 20. When the storage value A is received from the control unit 20, (A).

The controller 20 performs a humidification operation and a storage mode for the stored value A and an oscillator protection mode.

First, the humidification operation is widely known. The controller 20 applies an operation control signal corresponding to the humidification amount selected by the user to the vibrator controller 5 in accordance with the humidifying operation start input from the input unit 1, The controller 5 supplies a current corresponding to the applied operation control signal to the vibrator 7 to start the humidification operation. The control unit 20 applies an operation stop signal to the vibrator control unit 5 in accordance with the end of the humidification time selected by the user or the input of the humidification operation end and the vibrator control unit 5 cuts off the current supplied to the vibrator 7 And the humidifying operation is terminated.

Next, the control unit 20 performs a storage mode for the stored value A. [ (Or voltage) applied to the vibrator 7 when the vibrator 7 contacting the water is normally operated by the power supply unit supplies the same power by the characteristics of the electric elements provided for each ultrasonic humidifier Can be different. In order to take account of the characteristics of the electric elements for each ultrasonic humidifier, the controller 20 sequentially applies the operation control signals corresponding to the respective humidification amounts selectable in the ultrasonic humidifier to the vibrator controller 5 to operate the vibrator 7 And obtains the average values of the sensing values or sensing values corresponding to the respective operation control signals from the current sensing unit 9 and stores them in the storage unit 13. [ In the present embodiment, the average values of the sensed values or sensed values are referred to as first to third stored values A1, A2, A3 (collectively referred to as A). The control unit 20 outputs the first to third reference values R1, R2, R3 (collectively referred to as R) obtained by summing the allowable ranges to the first to third stored values A1, A2, . Here, the stored value A is determined according to the electrical characteristics of the ultrasonic humidifier equipped with the vibrator 7 and the electrical characteristics of the vibrator 7, and the reference value R is a sum of the stored value A and the allowable range Is a value corresponding to the magnitude of the current that the vibrator 7 can operate without damage. In particular, even if the vibrator 7 normally operates, the sensing value N during the humidification operation may fluctuate depending on the height of the water in the water tank, the water temperature, etc. Therefore, Should be calculated. The permissible range can be set differently according to the selectable humidification amount. The performance of the storage mode is described in detail below.

Next, the control unit 20 performs the vibration protecting mode while performing the humidifying operation. The controller 20 applies the operation control signal to the vibrator controller 5 according to the amount of the humidifier selected by the user to operate the vibrator 7 to perform the humidification operation, The reference value R obtained by adding the permissible range to the reference value A is compared with the detection value N from the current sensing unit 9 to determine whether or not current interruption to the oscillator 7 is necessary. When it is necessary to cut off the current to the vibrator 7, the control unit 20 applies the operation cutoff signal to the vibrator controller 5 to immediately block the current to the vibrator 7 to protect the vibrator 7. The oscillator protection mode will be described later in detail.

Fig. 2 is a flow chart of the first embodiment of the control method of the ultrasonic humidifier of Fig. 1; In the first embodiment, the vibration protection mode is performed together while the humidification operation is performed. The water tank must be supplied with water by the user.

In step S1, the control unit 20 receives power from the power source unit and performs a standby state. Here, in the standby state, the control unit 20 operates the input unit 1 and the display unit 3, and is able to acquire a user input from the input unit 1. [

In step S3, the control unit 20 acquires a user input through the input unit 1. [ The user input includes a selected humidification amount (one humidification amount among a plurality of selectable humidification amounts), a humidification time, a humidifying operation start input, a storage mode start input, a storage mode end input, and the like.

In step S5, the control unit 20 determines whether or not the humidifying operation start input is obtained from the input unit 1. [ If the humidification operation start input is obtained, the control unit 20 proceeds to step S7, otherwise proceeds to step S3 to acquire the user input from the input unit 1. [

In step S7, the control unit 20 generates an operation control signal corresponding to the selected amount of humidification in step S3 and applies it to the vibrator control unit 5 to operate the vibrator 7 to start the humidification operation. The control unit 20 acquires the sensed value N of the current applied from the transducer control unit 5 to the transducer 7 from the current sensing unit 9.

In step S9, the control unit 20 reads the stored value A corresponding to the selected amount of humidification from the storage unit 13, and compares the read value A with the reference value R, And compares the value (N). For example, if the detected value N and the selected value of the humidification amount are in the [Strong] step, the control unit 20 stores the selected first humidification amount R1 in the [ In the [approximately] step, the third reference value R3 is compared. If the sensed value N is greater than the reference value R corresponding to the selected amount of humidification, the process proceeds to step S11. Otherwise, the humidification operation and the current sensation are performed during the humidification time, and step S9 is performed.

In step S11, the controller 20 determines that there is no water in contact with the vibrator 7 or an overcurrent is applied to the vibrator 7, so that the vibrator controller 5 sends an operation stop signal The current to the vibrator 7 is cut off.

In step S13, the control unit 20 visually and / or audibly notifies the display unit 3 that the current of the vibrator 7 is cut off. In addition, the control unit 20 visually and / or audibly performs a guidance display including [no water] and / or [current abnormality-overcurrent] through the display unit 3 together with the current interruption notification of the vibrator 7 do. The control unit 20 proceeds from step S13 to step S1 and maintains the standby state. When proceeding from step S13 to step S1, the control unit 20 initializes the previously obtained user input and proceeds from step S1 to step S3 to obtain a new user input.

Through the steps S11 and S13, the control unit 20 prevents the vibrator 7 from being damaged by the overcurrent, and notifies the user of the current interruption and / or guidance of the vibrator 7, The water supply may be additionally provided or the water bath tilted may be made horizontal, or the vibration part may be rotated so as to contact the vibration part in Korean Patent No. 10-1527339, or the necessity of repairing the ultrasonic humidifier may be announced.

In addition, the controller 20 can quickly detect that the vibrator 7 is not in contact with water through the sensing value N. In the prior art Korean Patent No. 10-1527339, it is impossible to judge whether the ultrasonic vibrator is in contact with water. Therefore, in order to protect the ultrasonic vibrator, The invention can accurately determine that the vibrator 7 is not in contact with water, so that the water in the water tank can be used as much as possible, thereby reducing the number of water replenishment times.

3 is a flow chart of the first embodiment of the storage mode for storing the stored value A according to the respective amounts of the humidification of FIG. At the beginning of Fig. 3, the power source supplies necessary power to the ultrasonic humidifier, and the controller 20 is performing step S3. Water should be supplied by the user to the tank to perform the storage mode.

In step S21, the control unit 20 determines whether or not the storage mode start input is obtained from the input unit 1. [ If the storage mode start input is obtained, the control unit 20 proceeds to step S23. Otherwise, the control unit 20 waits for the storage mode start input to be acquired while performing step S21.

In step S23, the control unit 20 sends an operation control signal corresponding to the humidification amount [strong] step to the vibrator control unit 5 at a first time (for example, 3 seconds) for a first reference time 100 ms) to operate the vibrator 7. The controller 20 stores the average value of the sensed values or sensed values applied at the first time interval from the current sensing unit 9 as the first stored value A1 during the operation of the vibrator 7. Also, the controller 20 visually and / or audibly displays on the display unit 3 that the storage mode of the [STRONG] step is being performed during the execution of step S23. The control unit 20 proceeds to step S25 after step S23.

In step S25, the control unit 20 sends an operation control signal corresponding to the humidification amount [intermediate] to the oscillator control unit 5 for a second time (for example, 100 ms) for a second reference time (for example, So that the oscillator 7 is operated. The controller 20 stores the average value of the sensed values or sensed values applied at the second time interval from the current sensing unit 9 during the operation of the transducer 7 as the second stored value A2. Also, the controller 20 visually and / or audibly displays on the display unit 3 that the storage mode of the [middle] step is being performed during the execution of the step S25. The control unit 20 proceeds to step S27 after step S25.

In step S27, the control unit 20 sends an operation control signal corresponding to the [amount of humidification amount] to the oscillator control unit 5 in a third time (for example, 100 ms) for a third reference time (for example, So that the oscillator 7 is operated. The controller 20 stores the average value of the sensing values or sensing values applied at the third time interval from the current sensing unit 9 as the third storage value A3 during the operation of the vibrator 7. In addition, the control unit 20 visually and / or audibly displays on the display unit 3 that the storage mode of the [weak] step is being performed during the execution of step S27. The control unit 20 proceeds to step S29 after step S27.

In step S29, the control unit 20 determines whether the storage mode end input is obtained through the input unit 1. [ Since the execution time of steps S23 to S27 is completed within about ten seconds, the above storage mode is being performed by the user despite the display by the display section 3 of steps S23 to S27 May not be able to recognize. For this, the control unit 20 allows the user to input the storage mode end input through the input unit 1, so that the user recognizes that the control unit 20 has performed the storage mode. In particular, since the storage mode does not need to be frequently performed, it is necessary to recognize that the user has performed the storage mode to prevent redundant execution of the unnecessary storage mode by the user. For example, the storage mode may be performed after shipment of the ultrasonic humidifier or replacement of the vibrator 7. If the storage mode end input is obtained, the control unit 20 ends the storage mode, and otherwise performs step S29 until the storage mode end input is obtained. In addition, the controller 20 may terminate the storage mode and perform a standby state.

In addition, the control unit 20 controls the display unit 3 to visually and / or auditorily input the storage mode ending input through the input unit 1 while performing step S29, until the storage ending input is obtained It can also be displayed.

Also, in the above-described steps S23 to S27, the control unit 20 performs the storage mode in the order of [strong], [medium], and [weak], but it is also possible in another order. For example, the storage mode may be performed in the order of [weak], [medium], and [strong].

The control unit 20 stores the stored value A reflecting the electrical characteristics of each ultrasonic humidifier mounted with the vibrator 7 having different electrical characteristics through the above-described steps S23, S25, and S27 Unit 13 and can be used to calculate the reference value R in the oscillator protection mode in Fig. Table 1 below is an example of the stored value (A) and the reference value (R).

The amount of steam Actual current value The stored value (A) Allowable range The reference value R River 600mA A1: 70 +15 R1: 85 medium 450mA A2: 60 +15 R2: 75 about 400mA A3: 50 +15 R3: 65

As shown in Table 1, the actual current value is the magnitude of the current supplied to the vibrator 7 in units of mA. The magnitude of the stored value is the sensing value sensed by the current sensing unit 9, If the current value is small, the stored value is also small. The control unit 20 calculates the reference value R by 85 (R1), 75 (R2) and 65 (R3) by applying the same allowable range to the stored values of the humidification amounts, And is used in step S9 of FIG.

The control unit 20 stores the reference value R obtained by adding the allowable range to the stored value A in advance in the storage unit 13 and stores the reference value R stored in the storage unit A in step S9 of FIG. R) may be read and used.

4 is a flowchart of a second embodiment of the storage mode for storing the stored value A according to the respective amounts of the humidification of FIG. At the beginning of Fig. 4, the power source supplies necessary power to the ultrasonic humidifier, and the controller 20 is performing step S3. Water should be supplied by the user to the tank to perform the storage mode.

In step S31, the control unit 20 determines whether or not the storage mode start input is obtained from the input unit 1. [ If the storage mode start input is obtained, the control unit 20 proceeds to step S32-1. Otherwise, the control unit 20 waits for the storage mode start input to be acquired while performing step S31.

In step S32-1, the control unit 20 receives the water level sensing value from the water level sensing unit 11 and determines whether the current water level is equal to or higher than the low water level from the water level sensing value. If the water level is lower than the low water level, the process proceeds to step S33, otherwise, if the current water level is lower than the low water level, the process proceeds to step S32-2.

In step S32-2, the controller 20 may damage the vibrator 7 when the vibrator 7 is operated at a current water level below the low water level, so that the water supplement guide display can be visualized and displayed through the display unit 3 And / or audibly. The control unit 20 repeatedly performs the steps S32-1 and S32-2 until the current water level reaches the low water level or more.

Steps S33, S35, S37, and S39 are the same as steps S23, S25, S27, and S29 in Fig. 3, respectively.

Through the above-described steps S32-1 and S32-2, when performing the storage mode, the controller 20 performs the operation of the vibrator 7 in a state in which a sufficient amount of water of a low or higher level is supplied to the water tank, Thereby protecting the vibrator 7.

3 and 4, if the storage mode is interrupted for any reason and the storage mode is not normally completed, the control unit 20 determines whether the storage mode is normally completed through the display unit 3 The user performs the error display including the sound and / or the guide indication that the storage mode should be performed again visually and / or audibly, and then proceeds to step S21 of FIG. 3 or step S31 of FIG.

5 is a flowchart of a second embodiment of the control method of the ultrasonic humidifier of Fig. In the second embodiment, the vibration protecting mode is performed together while the humidifying operation is performed. The water tank must be supplied with water by the user.

In step S41, the control unit 20 receives power from the power source unit and determines whether a storage value stored in the storage unit 13 is valid. If the initial value is stored in the storage unit 13, the control unit 20 does not perform the storage mode previously. If the storage unit 13 stores the valid value in the storage unit 13, In the case where the value is stored, the control unit 20 previously performed the storage mode. If a valid storage value is stored, the process proceeds to step S1 of FIG. 2 to perform the oscillator protection mode, and if not, the process proceeds to step S43.

In step S43, the control unit 20 visually and / or audibly displays on the display unit 3 that the storage mode should be performed, and returns to step S21 of FIG. 3 or step S31 of FIG. 4 Go ahead.

Through the above-described steps S41 and S43, the controller 20 performs the humidification operation and / or the vibrator protection mode after the user performs the storage mode, thereby protecting the vibrator 7.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the general inventive concept as defined by the appended claims. It is to be understood that modifications are possible and that such modifications are within the scope of the claims.

1: input unit 3: display unit
5: oscillator control unit 7: oscillator
9: current sensing unit 11: water level sensing unit
13: storage unit 20: control unit

Claims (13)

1. An ultrasonic humidifier comprising: a water tank for storing water; and a humidifier main body for containing the water tank, wherein the ultrasonic humidifier comprises:
A vibrator;
A vibrator controller for supplying and disconnecting a current to the vibrator according to an operation control signal from the controller;
A current sensing unit for sensing a current applied to the vibrator from the vibrator controller;
An input unit for obtaining a user input for selecting one of a plurality of humidification amounts;
A storage unit for storing a plurality of storage values corresponding to each of the plurality of humidification amounts and determined according to electrical characteristics of the ultrasonic humidifier and the vibrator;
And an operation control signal corresponding to the selected amount of humidification is applied to the vibrator controller to operate the vibrator and a comparison is made between a sensed value from the current sensing unit and a reference value obtained by adding a tolerance to a stored value corresponding to the selected amount of humidification And a controller for controlling the supply and the blocking of the current to the vibrator. The method according to claim 1,
Wherein the controller applies an operation cutoff signal to the vibrator controller to cut off current supply to the vibrator if the sensed value is greater than the reference value. The method according to claim 1,
Wherein the control unit applies an operation control signal to the vibrator controller to maintain the supply of current to the vibrator when the sensed value is equal to or smaller than the reference value. The method according to claim 1,
Wherein the control unit operates the vibrator by sequentially applying an operation control signal corresponding to each of the plurality of humidification amounts to the vibrator control unit for a reference time before performing the vibrator protection mode, And stores the sensed values or the average values of the sensed values in the storage unit as storage values corresponding to the plurality of the humidification quantities. 5. The method of claim 4,
Wherein the ultrasonic humidifier includes a water level sensor for sensing a water level of the water in the water tank,
Wherein the control unit performs the storage mode when the current water level is equal to or higher than the low water level from the water level detection value of the water level sensing unit. 5. The method of claim 4,
Wherein the control unit determines whether the stored values are stored in the storage unit before performing the oscillator protection mode and the storage mode. The method according to claim 6,
Wherein the control unit performs the oscillator protection mode when valid storage values are stored in the storage unit and performs the storage mode when valid storage values are not stored in the storage unit. 1. A control method for an ultrasonic humidifier comprising a water tank for storing water and a humidifier main body for containing the water tank, the control method comprising the step of performing a vibrator protection mode,
Obtaining a user input that includes at least a selected amount of humidification;
Applying a current corresponding to the selected amount of humidification to the vibrator to perform a humidifying operation;
A sensing value corresponding to the current applied to the vibrator during the execution of the humidification operation and a reference value corresponding to the selected humidification amount and summing the allowable range with the stored value determined according to the electrical characteristics of the ultrasonic humidifier and the vibrator ;
And controlling the supply and blocking of the current to the vibrator by comparing the sensed value with the reference value in the comparing step. 9. The method of claim 8,
Wherein the performing of the oscillator protection mode comprises blocking current supply to the oscillator if the sensed value is greater than the reference value in the comparing step. 9. The method of claim 8,
The method according to claim 1, wherein, before performing the humidification operation step, the control method includes sequentially operating each of the currents corresponding to each of the plurality of humidification amounts for a reference time to operate the vibrator, And storing the average value of the sensed values corresponding to each of the plurality of humidification amounts as the stored values corresponding to each of the plurality of humidification amounts. 11. The method of claim 10,
Wherein the control method comprises a step of sensing the water level of the water in the water tank before the storage mode execution step and performing the storing mode when the current water level is equal to or higher than the low water level in the water level sensing step Method of controlling a humidifier. 11. The method of claim 10,
Wherein the control method includes a step of determining whether the stored values are stored in the storage unit before performing the oscillator protection mode and performing the storage mode. Way. 13. The method of claim 12,
The control method may further comprise the step of performing the oscillator protection mode when valid storage values are stored in the storage unit in the determination step, and when the valid storage values are not stored in the storage unit, Wherein the controller controls the operation of the ultrasonic humidifier.

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